Step 1: Comprehension Task:
The objective is to determine the identity of the inaugural Tirthankara among the 24 spiritual guides in Jainism.
Step 2: Elaboration:
Jain doctrine posits that the current cosmic epoch's spiritual lineage comprises 24 Tirthankaras.
The progenitor Tirthankara is recognized as Rishabhnath, also referred to as Rishabhadeva or Adinatha.
Parshvanatha holds the position of the 23rd Tirthankara.
The culminating Tirthankara, the 24th, is Mahavira.
Arishtanemi, also known as Neminatha, is the 22nd Tirthankara.
Sambhavnath is designated as the 3rd Tirthankara.
Step 3: Conclusive Response:
Rishabhnath is identified as the primary Tirthankara within Jainism.